- Email: [email protected]
Symposium on materials sciences under microgravity
Astronomy, astrophysics and atmospheric physics; Plasma interactions and diagnostics; Technical, industrial and cross-disciplinary applications. Time schedule: Second circular: 30 October 1985 Deadline for abstract submission: 30 January 1986 Third circular: 31 March 1986 Final registration and paper submission: 31 May 1986. Further information may be obtained from the Conference Co-Chairmen: M. Inguscio and F. Strumia Dipartimento di Fisica dell’Universita di Pisa Piazza Torricelli 2 I-56100 Pisa, Italy. Telephone: 050/45222 Telex: PSAFIS 500319.
1.26.SYMPOSIUMON MATERIALSSCIENCESUNDERMlCROGRAVllY
Bordeaux, France, 2-5 December 1986 The Centre National d’Etudes Spatiales (CNES) and the European Space Agency (ESA) are organizing the 6th European Symposium on Materials Sciences under Microgravity. The Symposium will take place in the Palais des Congres in Bordeaux Lac, 2 km away from the centre of the famous and historic town of Bordeaux. The purpose of this Symposium is to present the scientific results achieved since the last conference held in Schloss-Elmau, FRG, in November 1984, from both space experiments and ground-based studies concerning the influence of gravity on physico-chemical phenomena and materials processing. The working languages will be French and English. Simultaneous translation will be provided in both languages. Scientific Committee The programme of this Symposium is placed under the chairmanship of a scientific committee that will examine proposals for papers. This scientific committee is composed, at this time, of the following members: Chairman: B. Mutaftschiev Secretary: J.-C. Launay 42
Laboratoire Maurice Letort, CNRS, Nancy, France Laboratoire France
de Chimie du Solide du CNRS, Talence,
Members: A. Authier C. Belouet R. Cadoret J.-J . Favier B. Feuerbacher F. Jamin-Changeart E. Kaldis J.-C. Legros W. Littke Y. Malmejac L. Napolitano J.-F. Padday J. Richter B. Roux P. R. Sahm W. Steinbom J.-P.-B. Vreeburg H. U. Walter
Universite P. et M. Curie, Paris, France CGE, Marcoussis, France Universite de Clermont-Ferrand, France CEA-CENG, Grenoble, France DFVLR, Cologne, FRG CNES, Toulouse, France ETH, Zurich, Switzerland Universite Libre de Bruxelles, Belgium Universite Freiburg, FRG CEA-CENG, Grenoble, France Universite de Naples, Italy Kodak, Harrow, UK RWTH, Aachen, FRG CNRS, Marseille, France Giesserei Institut, Aachen, FRG DFVLR, Cologne, FRG NLR, Amsterdam, The Netherlands ASE, Paris, France
Organization Committee Chairman: Laboratoire de Chimie du Solide du CNRS, Talence J.-C. Launay Members: R. Beynat R. Bonneville J.-P. Caltagirone J. Garcia M. Guerin D. Magot H. U. Walter
Chambre de Commerce et d’hrdustrie, Bordeaux CNES, Paris Laboratoire Energetique et Phenomenes de Transfert, Talence CNES, Toulouse CNES, Toulouse Bordeaux Aquitaine, Association Spatiale, Bordeaux ASE, Paris
Preliminary Progmmme The papers will be grouped together into the following main topics: Space Experiments synthesis of results gathered since the first “Spacelab” mission: Dl mission, sounding-rockets, other means; new experiments. Ground-based research: theoretical and experimental studies. Development and prospects: carriers and instrumentation; space station and laboratory materials processing in space. 43
“Technospace”, an international show on space technology and instrumentation, will be held parallel to this Symposium. For further information, please contact: Secretariat du 6” Symposium Europeen J.-C. Launay Laboratoire de chimie du solide du CNRS 351 Cours de la Liberation 33405 Talence Cedex, France
1.27. MEEIING ON THE ORIGIN AND EVOLUTION OF PLANETARY AND SATElUTE ATMOSPHERES
Tucson, Arizona, USA, 17 March 1987 Spacecraft missions to diverse objects in the solar system have provided a rich tapestry of constraints on the origin and evolution of their atmospheres and have produced fresh insights into similar questions concerning our home planet. At the same time, there has been an increasing sophistication in laboratory measurements and theoretical investigations that have provided a conceptual framework for discerning patterns in the data, for understanding basic physical and chemical processes, and for enuncia~g testable hypotheses concerning the history of atmospheres. A number of provocative clues concerning the origin and evolution of planetary and satellite atmospheres have emerged. These include the hundredfold enrichment of D for Venus’ water compared with terrestrial sea water; an orders of magnitude gradient in the abundances of several primordial rare gases from Venus’ to Earths to Mars’ atmospheres; Xe isotopic fractionation in the atmospheres of Earth and Mars relative to Xe in chondrites; a several-fold to a several tens enhancement in the C/I-I ratio over its solar elemental value in the atmospheres of the giant planets, combined with possible depletions of other volatiles (e.g. 0 on Jupiter, N on Uranus and Neptune, etc.); a sub-solar He abundance in Saturn’s atmosphere; the occurrence of a fully oxidized gas, N, and a fully reduced gas CH, as the two major constituents of the sizeable atmosphere of the Saturnian satellite Titan, and possibly Triton, and the prevalence of sulphur compounds in the outgassed volatiles of the Jovian satellite 10. Equally provocative theories have been proposed to explain some of the data. Catastrophism is no longer unfashionable. For example, collision of the Earth with a Mars-sized object enjoys current popularity as a hypo~esis for the origin of the Moon! Repeated encounters of inner planets with comets in the past have been suggested to explain the abundances and make up of many of their volatiles, including rare gases. Such collisions could have profound 44
1.26.SYMPOSIUMON MATERIALSSCIENCESUNDERMlCROGRAVllY
Bordeaux, France, 2-5 December 1986 The Centre National d’Etudes Spatiales (CNES) and the European Space Agency (ESA) are organizing the 6th European Symposium on Materials Sciences under Microgravity. The Symposium will take place in the Palais des Congres in Bordeaux Lac, 2 km away from the centre of the famous and historic town of Bordeaux. The purpose of this Symposium is to present the scientific results achieved since the last conference held in Schloss-Elmau, FRG, in November 1984, from both space experiments and ground-based studies concerning the influence of gravity on physico-chemical phenomena and materials processing. The working languages will be French and English. Simultaneous translation will be provided in both languages. Scientific Committee The programme of this Symposium is placed under the chairmanship of a scientific committee that will examine proposals for papers. This scientific committee is composed, at this time, of the following members: Chairman: B. Mutaftschiev Secretary: J.-C. Launay 42
Laboratoire Maurice Letort, CNRS, Nancy, France Laboratoire France
de Chimie du Solide du CNRS, Talence,
Members: A. Authier C. Belouet R. Cadoret J.-J . Favier B. Feuerbacher F. Jamin-Changeart E. Kaldis J.-C. Legros W. Littke Y. Malmejac L. Napolitano J.-F. Padday J. Richter B. Roux P. R. Sahm W. Steinbom J.-P.-B. Vreeburg H. U. Walter
Universite P. et M. Curie, Paris, France CGE, Marcoussis, France Universite de Clermont-Ferrand, France CEA-CENG, Grenoble, France DFVLR, Cologne, FRG CNES, Toulouse, France ETH, Zurich, Switzerland Universite Libre de Bruxelles, Belgium Universite Freiburg, FRG CEA-CENG, Grenoble, France Universite de Naples, Italy Kodak, Harrow, UK RWTH, Aachen, FRG CNRS, Marseille, France Giesserei Institut, Aachen, FRG DFVLR, Cologne, FRG NLR, Amsterdam, The Netherlands ASE, Paris, France
Organization Committee Chairman: Laboratoire de Chimie du Solide du CNRS, Talence J.-C. Launay Members: R. Beynat R. Bonneville J.-P. Caltagirone J. Garcia M. Guerin D. Magot H. U. Walter
Chambre de Commerce et d’hrdustrie, Bordeaux CNES, Paris Laboratoire Energetique et Phenomenes de Transfert, Talence CNES, Toulouse CNES, Toulouse Bordeaux Aquitaine, Association Spatiale, Bordeaux ASE, Paris
Preliminary Progmmme The papers will be grouped together into the following main topics: Space Experiments synthesis of results gathered since the first “Spacelab” mission: Dl mission, sounding-rockets, other means; new experiments. Ground-based research: theoretical and experimental studies. Development and prospects: carriers and instrumentation; space station and laboratory materials processing in space. 43
“Technospace”, an international show on space technology and instrumentation, will be held parallel to this Symposium. For further information, please contact: Secretariat du 6” Symposium Europeen J.-C. Launay Laboratoire de chimie du solide du CNRS 351 Cours de la Liberation 33405 Talence Cedex, France
1.27. MEEIING ON THE ORIGIN AND EVOLUTION OF PLANETARY AND SATElUTE ATMOSPHERES
Tucson, Arizona, USA, 17 March 1987 Spacecraft missions to diverse objects in the solar system have provided a rich tapestry of constraints on the origin and evolution of their atmospheres and have produced fresh insights into similar questions concerning our home planet. At the same time, there has been an increasing sophistication in laboratory measurements and theoretical investigations that have provided a conceptual framework for discerning patterns in the data, for understanding basic physical and chemical processes, and for enuncia~g testable hypotheses concerning the history of atmospheres. A number of provocative clues concerning the origin and evolution of planetary and satellite atmospheres have emerged. These include the hundredfold enrichment of D for Venus’ water compared with terrestrial sea water; an orders of magnitude gradient in the abundances of several primordial rare gases from Venus’ to Earths to Mars’ atmospheres; Xe isotopic fractionation in the atmospheres of Earth and Mars relative to Xe in chondrites; a several-fold to a several tens enhancement in the C/I-I ratio over its solar elemental value in the atmospheres of the giant planets, combined with possible depletions of other volatiles (e.g. 0 on Jupiter, N on Uranus and Neptune, etc.); a sub-solar He abundance in Saturn’s atmosphere; the occurrence of a fully oxidized gas, N, and a fully reduced gas CH, as the two major constituents of the sizeable atmosphere of the Saturnian satellite Titan, and possibly Triton, and the prevalence of sulphur compounds in the outgassed volatiles of the Jovian satellite 10. Equally provocative theories have been proposed to explain some of the data. Catastrophism is no longer unfashionable. For example, collision of the Earth with a Mars-sized object enjoys current popularity as a hypo~esis for the origin of the Moon! Repeated encounters of inner planets with comets in the past have been suggested to explain the abundances and make up of many of their volatiles, including rare gases. Such collisions could have profound 44